package com.cskaoyan.com.base;

public class DemoTest2 {
    public static void main(String[] args) {

        A a = new A();
        a.a();
    }
}
class A{

    public void a(){
        b();
    }
    public void b(){
        c();
    }
    public void c(){
        System.out.println("123");
    }
}